Frequencies for first 10,000 rows of educstrflg variable in natl1970 dataset :

  Education |
 of Parents |
 (By State) |
       flag |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,831       98.31       98.31
          1 |        169        1.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016